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van der Graaf, S. (author), Dammers, E. (author), Segers, A.J. (author), Kranenburg, R. (author), Schaap, M. (author), Shephard, M.W. (author), Erisman, J.W. (author)Atmospheric levels of ammonia (NH3) have substantially increased during the last century, posing a hazard to both human health and environmental quality. The atmospheric budget of NH3, however, is still highly uncertain due to an overall lack of observations. Satellite observations of atmospheric NH3 may help us in the current observational and...article 2022
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van der Graaf, S. (author), Dammers, E. (author), Segers, A. (author), Kranenburg, R. (author), Schaap, M. (author), Shephard, M.W. (author), Erisman, J.W. (author)Atmospheric levels of ammonia (NH3) have substantially increased during the last century, posing a hazard to both human health and environmental quality. The atmospheric budget of NH3, however, is still highly uncertain due to an overall lack of observations. Satellite observations of atmospheric NH3 may help us in the current observational and...article 2021
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van der Graaf, S.C. (author), Janssen, T.A.J. (author), Erisman, J.W. (author), Schaap, M. (author)Atmospheric reactive nitrogen (N) deposition is an important driver of carbon (C)sequestration in forest ecosystems. Previous studies have focused on N-C interactions in various ecosystems; however, relatively little is known about the impact of N deposition on ecosystem C cycling during climate extremes such as droughts. With the occurrence and...article 2021
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Dammers, E. (author), McLinden, C.A. (author), Griffin, D. (author), Shephard, M.W. (author), van der Graaf, S. (author), Lutsch, E. (author), Schaap, M. (author), Gainairu-Matz, Y. (author), Fioletov, V. (author), van Damme, M. (author), Whitburn, S. (author), Clarisse, L. (author), Cady-Pereira, K. (author), Clerbaux, C. (author), francois Coheur, P. (author), Erisman, J.W. (author)Ammonia (NH3) is an essential reactive nitrogen species in the biosphere and through its use in agriculture in the form of fertilizer (important for sustaining humankind). The current emission levels, however, are up to 4 times higher than in the previous century and continue to grow with uncertain consequences to human health and the...article 2019
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Dammers, E. (author), Schaap, M. (author), Haaima, M. (author), Palm, M. (author), Wichink Kruit, R.J. (author), Volten, H. (author), Hansen, A. (author), Swart, D. (author), Erisman, J.W. (author)Ammonia (NH3) is difficult to monitor at atmospheric concentrations due its high solubility and reac-tivity and the strong spatial and temporal variations of its concentrations. Monitoring is mostly per-formed using passive samplers or filter packs with daily coverage at best. Only at a few sites ammonia is measured with more expensive wet...article 2017
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Dammers, E. (author), Palm, M. (author), van Damme, M. (author), Vigouroux, C. (author), Smale, D. (author), Conway, S. (author), Toon, G.C. (author), Jones, N. (author), Nussbaumer, E. (author), Warneke, T. (author), Petri, C. (author), Clarisse, L. (author), Clerbaux, C. (author), Hermans, C. (author), Lutsch, E. (author), Strong, K. (author), Hannigan, J.W. (author), Nakajima, H. (author), Morino, I. (author), Herrera, B. (author), Stremme, W. (author), Grutter, M. (author), Schaap, M. (author), Kruit, R.J.W. (author), Notholt, J. (author), Coheur, P.F. (author), Erisman, J.W. (author)Global distributions of atmospheric ammonia (NH3) measured with satellite instruments such as the Infrared Atmospheric Sounding Interferometer (IASI) contain valuable information on NH3 concentrations and variability in regions not yet covered by ground-based instruments. Due to their large spatial coverage and (bi-)daily overpasses, the...article 2016
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Hensen, A. (author), Erisman, J.W. (author), Wichink Kruit, R.J. (author), Schräder, F. (author), Brümmer, C. (author), | Flechard, C.R. (author), van Zanten, M.C. (author), Zöll, U. (author)Abstract. The accurate representation of bidirectional ammonia (NH3/ biosphere–atmosphere exchange is an important part of modern air quality models. However, the cuticular(or external leaf surface) pathway, as well as other non-stomatal ecosystem surfaces, still pose a major challenge to translating our knowledge into models. Dynamic...article 2016
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Erisman, J.W. (author), Dammers, E. (author), van Damme, M. (author), Soudzilovskaia, N. (author), Schaap, M. (author)An overview of the achievements and the current state of knowledge on reactive nitrogen in Europe, focusing on deposition, critical load exceedances, and modeled and measured trends.article 2015
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Dammers, E. (author), Vigouroux, C. (author), Palm, M. (author), Mahieu, E. (author), Warneke, T. (author), Smale, D. (author), Langerock, B. (author), Franco, B. (author), van Damme, M. (author), Schaap, M. (author), Notholt, J. (author), Erisman, J.W. (author)We present a retrieval method for ammonia (NH3) total columns from ground-based Fourier transform infrared (FTIR) observations. Observations from Bremen (53.10° N, 8.85° E), Lauder (45.04° S, 169.68° E), Reúnion (20.9° S, 55.50° E) and Jungfraujoch (46.55° N, 7.98° E) were used to illustrate the capabilities of the method. NH3 mean total columns...article 2015
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Bleeker, A. (author), Galloway, J.N. (author), Grizzetti, B. (author), Erisman, J.W. (author), Dise, N.B. (author), Sutton, M.A. (author), Leach, A.M. (author), d. Vries, W. (author)Nitrogen (N) is a key nutrient, vital for the survival of humans and all other living organisms. While di-nitrogen gas (N2) is abundant in the atmosphere, most organisms are unable to use this chemically unreactive form. First it must be converted or fixed߿ݠinto a reactive form such as ammonia (NH3) or nitrogen oxide (NOx). These and other forms...article 2015
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Bleeker, A. (author), Galloway, J.N. (author), Leach, A.M. (author), Erisman, J.W. (author), Winiwarter, W. (author), Leip, A. (author)The human alteration of the nitrogen cycle has evolved from minimal in the mid-19th century to extensive in the present time. The consequences to human and environmental health are significant. While much attention has been given to the extent and impacts of the alteration, little attention has been given to those entities (i.e., consumers,...article 2014
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van Damme, M. (author), Wichink Kruit, R.J. (author), Schaap, M. (author), Clarisse, L. (author), Clerbaux, C. (author), Coheur, P.F. (author), Dammers, E. (author), Dolman, A.J. (author), Erisman, J.W. (author)Monitoring ammonia (NH3) concentrations on a global to regional scale is a challenge. Due to the limited availability of reliable ground-based measurements, the determination of NH3 distributions generally relies on model calculations. Novel remotely sensed NH3burdens provide valuable insights to complement traditional assessments for clear-sky...article 2014
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Bleeker, A. (author), de Vries, W. (author), Bekunda, M. (author), Reis, S. (author), Sutton, M.A. (author), Howard, C.M. (author), Grizzetti, B. (author), Erisman, J.W. (author), van Grinsven, H.J.M. (author), Abrol, Y.P. (author), Adhya, T.K. (author), Billen, G. (author), Davidson, E.A. (author), Datta, A. (author), Diaz, R. (author), Liu, X.J. (author), Oenema, O. (author), Palm, C. (author), Raghuram, N. (author), Scholz, R.W. (author), Sims, T. (author), Westhoek, H. (author), Zhang, F.S. (author)Executive Summary Key Points Nutrient Benefits and Threats * The sustainability of our world depends fundamentally on nutrients. In order to feed 7 billion people, humans have more than doubled global land-based cycling of nitrogen (N) and phosphorus (P). * The world’s N and P cycles are now out of balance, causing major environmental, health...other 2013
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Bleeker, A. (author), Galloway, J.N. (author), de Vries, W. (author), Dise, N.B. (author), Seitzinger, S. (author), Leach, A.M. (author), Erisman, J.W. (author), Petrescu, R. (author)The demand for more food is increasing fertilizer and land use, and the demand for more energy is increasing fossil fuel combustion, leading to enhanced losses of reactive nitrogen (Nr) to the environment. Many thresholds for human and ecosystem health have been exceeded owing to Nr pollution, including those for drinking water (nitrates), air...article 2013
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Bleeker, A. (author), Galloway, J.N. (author), Leach, A.M. (author), Erisman, J.W. (author)Nitrogen over the ages! It was discovered in the eighteenth century. The following century, its importance in agriculture was documented and the basic components of its cycle were elucidated. In the twentieth century, a process to provide an inexhaustible supply of reactive N (Nr; all N species except N2) for agricultural, industrial and...article 2013
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Erisman, J.W. (author), Bleeker, A. (author), Galloway, J.N. (author), Leach, A.M. (author), Kohn, R. (author), Kitzes, J. (author)The human use of reactive nitrogen (Nr) in the environment has profound beneficial and detrimental impacts on all people. Its beneficial impacts result from food production and industrial application. The detrimental impacts occur because most of the Nr used in food production and the entire amount of Nr formed during fossil fuel combustion are...article 2012
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Energieonderzoek Centrum Nederland (author), Bleeker, A. (author), Erisman, J.W. (author)bestaat niet.article 2012
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- Erisman, J.W. (author), Aneja, V.P. (author), Schlesinger, W.H. (author), Sharma, M. (author), Behera, S.N. (author), Battye, W. (author), Energieonderzoek Centrum Nederland (author) conference paper 2011
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Erisman, J.W. (author), Aneja, V.P. (author), Schlesinger, W.H. (author), Behera, S.N. (author), Sharma, M. (author), Battye, W. (author)The rapid increase in anthropogenic nitrogen emissions to the atmosphere is matter of concern for the environment, as these may lead to photochemical air pollution, reduced visibility, eutrophication of surface waters, changes in biodiversity, acid rain, stratospheric ozone depletion, and global warming. In this study, ambient emissions of...article 2011